fix(notifications): a notice keeps what to say and says it in the reader's language when shown

frontend/src/modules/plex/PlexSidebar.tsx

@@ -22,6 +22,7 @@ import { usePlex, usePlexActions } from "./plexContext";
 import { DismissibleChip } from "../../components/ui/Chip";
 import { Input } from "../../components/ui/Input";
 import { useRail } from "../../lib/useRail";
+import { msg } from "../../lib/notifications";
 
 // The Plex module's left filter column — now the shared floating SidePanel with its filter groups
 // as reorderable "islands" (same system as the feed rail). Movie libraries get the full metadata
@@ -350,7 +351,7 @@ export function PlaylistPicker() {
       onOpenPlaylist(pl.id);
     } catch (e) {
       // Called without an await from the picker, so a refusal was an unhandled rejection.
-      notifyActionError(e, t("plex.playlistAdd.createFailed"));
+      notifyActionError(e, msg("plex.playlistAdd.createFailed"));
     }
   }